Heating device.



No. 731,580. PATENTED JUNE 23, 1903. A. & H. LEIBOLD.

HEATING DEVICE.

APPLIOATION FILED AUG. 15, 1902.

no MODEL. I

INVENTO/LS Z Q M W Z2603. A7T0fiNEY THE Ncmus Pzrzas can Puorouma, msnmcvrcn, o. c.

T all whom/it may concern/a I UNITED STATESMPATENT Patented June 23,1903.

. j LEIBOLD AND HENRY" LEIBOLD, OF NEW YORK, N. Y.

SPECTFIGATION :tormingpart of Letters Batent No. 731,580, dated d'unei23, 1903. Application filed August 15,1902. saints-119,715. (to model.)

Be it known that we, ADAM LEIBOLD and H nn RY LEIBQLDflitiZGDS of the United States, and residents of New York, in the county and State of New York, have invented certain new and'useful Improvements in Heating Devices,

of which the following is a specification.

This invention relates to devices for heatingcongealed substances in-vessels for the purpose of liquefying them. It has for its object to provide a suitable mechanism whereby congealed liquids may be liquefied in the vessel which may contain them without the necessity of heating thevessel, removing the substance therefrom, or the use of hot rooms. The last-named method is the most popular in use withdealers in liquids that are apt to solidify through subjection to cold, such as glucose, molasses, oils, tallow, and greases of alldescri-ptions.-: Among the users of these things perhaps the most popular method of extracting congealed or partially-congea1ed liquids from their vessels is to open the vesseland take out what appears to be enough for their immediate use. Then place it on a stove or apply heat to it in any other suitable manner. In 'machine-shops this practice is common,especially in cold weather,when consubstance contained therein, and when this foreign matter has entered it involvesextra time and labor on the part of a mechanic to strain it or clean it in some other suitable manner, thus becoming expensive because of the time and oilqwasted. The act of heating this material in a receptacle placed upon a stove, which,--infact, is the only quick way,

is nottolerated by some of the best insurance companies, as the "dangerof'fire is greatly increased by suchv practices. Still another popular method-one that is quite as dangerous as the last mentioned-is to subject the vessels containing the matter to be liquefied to an external heat, such as placing them near a fierce fire. The dangerof this method is that of explosions, the only advantage being that it offers uochance for the admission of dirt. All of these methods are expensive, slow, and by no means unique, so ourobject has been toprovide a device for accomplishing the objective ends of these methods in a cheaper, quicker, and safer manner.

We request attention to the drawings, in which Figure 1 represents our invention placed into a barrel containing congealed matterand showing connections to a boiler or other suitable means for introducing heat thereto. Fig. 2 sets forthatop View of ourinvention, partly in section, illustrating the construction of the device. Figs. 3 and 4 illustrate a feature of our invention in that they show the construction ofthe entering portion, which, it will be observed, is of a pointed structure, so that an entrance into matter in an advanced state of congelation will be more readily effected.

Now a brief inspection of the drawings will show that our invention consists of a couple of tubes'placed side by side, coiled in a suitable manner, and provided with a U-c0upling at their entering ends, so that a clear passage is made by entering one of the months A or B and passing around the coils through the U-coupling C, and back through the other pipe. In the preferred form of construction we have chosen to coil our pipe spirally.

The manner in which we employ our invention is as follows: Assuming that we have a barrel containing any of the previouslynamed substances, which we desire to draw ofi. We first remove the bung of the barrel, and inserting the pointed end of the device proceed to screw said device into the congealed matter. This done, we couple one of the months A or B to a pipe leading from a boiler or other suitable arrangement. When this coupling has been effected, a valveD is opened, and steam is permitted to' course through the coils of .the pipe, around the U- coupling, back through the opposite pipe, and off through the mouth thereof to a convenient outlet. This is the entire operation, with, of course,the exception of removing the heater from the barrel again.

Practice shows us that inside of three minutes a barrel of thoroughly-congealed matter can be brought to a desired liquid state, provided enough heat is supplied, and it is evident that this method is practical, thorough, and cheap, withoutembodying any of the dangerous elements described in the foregoing.

We do not desire to be understood as limit-ingourselves to 'the precise form of construction and arrangement described and shown, but reserve the right to alter the same in adapting our improvement, to the varying conditions of practice without departing from the spirit of the invention or the scope of the following claim.

Having thus described our invention, we 

